subscribe method

bool subscribe(State<StatefulWidget> state)

Make a State object aware of route changes.

Implementation

bool subscribe(State state) {
  bool subscribed = state is RouteAware;
  if (subscribed) {
    final modelRoute = ModalRoute.of(state.context);
    subscribed = modelRoute != null && modelRoute is PageRoute;
    if (subscribed) {
      // So to be informed when there are changes to route.
      routeObserver.subscribe(state as RouteAware, modelRoute);
    }
  }
  return subscribed;
}